Paper: CSIR-NET December 2014 · Subject: Physical Chemistry · Chapter: Group Theory · Topic: Symmetry Elements Point Groups · Marks: 2 · Difficulty: Medium
The product $\sigma^{\mathrm{xy}} . \mathrm{S}_{4}^{\mathrm{z}}\left(\mathrm{S}_{4}^{\mathrm{z}}\right.$ is the four fold improper axis of rotation around the $z$-axis, and $\sigma^{\mathrm{xy}}$ is the reflection in the xy plane) is